Recent activity by ShirleySteer

1 answer 39 views

Calculate the standard enthalpy change for the combustion of ethane (C2H6) gas to form carbon dioxide (CO2) gas and water (H2O) vapor at 298 K and 1 atm. The balanced chemical equation for the reaction is: C2H6(g) + 3.5 O2(g) → 2 CO2(g) + 3H2O(g) Given that the standard enthalpy of formation for C2H6(g) is -84.68 kJ/mol, CO2(g) is -393.51 kJ/mol, and H2O(g) is -241.82 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 54 views

What is the concentration of copper ions (Cu2+) in a sample solution if the absorbance of the solution at a wavelength of 550 nm is 0.45 and the path length of the sample cell is 1 cm? Given that the molar absorptivity of Cu2+ at this wavelength is 1.5 × 10^4 L mol^-1 cm^-1.

asked Jan 30 in Analytical Chemistry

1 answer 33 views

What is the role of the Gestalt therapist?

answered Jan 16 in Psychology

1 answer 66 views

How does the comparative method contribute to the evaluation of animal psychology?

asked Jan 16 in Psychology

1 answer 33 views

What is the Positive Organisational Scholarship Theory?

answered Jan 16 in Psychology

1 answer 29 views

What is meant by the term 'social loafing'?

answered Jan 14 in Psychology

1 answer 31 views

Why are continents unable to be pushed down into the mantle by plate boundaries?

answered Jan 8 in Science

1 answer 52 views

What are regular changes in biology or behavior that occur in a 24 hour cycle?

answered Jan 3 in Science

1 answer 10 views

What are atoms called when they have the same number of negative electrons as positive protons in an electrical charge?

asked Jan 2 in Science

1 answer 27 views

Living organisms are made up of what type of carbon-based compounds?

asked Dec 31, 2024 in Science

1 answer 33 views

Cellular respiration is the reverse or opposite of what?

asked Dec 30, 2024 in Science

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